A magnetic dipole is under the influence of two orthogonal magnetic fields, $B_1 = 0.5 \times 10^{-3}\,\text{T}$ and $B_2 = 0.866 \times 10^{-3}\,\text{T}$. If the dipole comes to stable equilibrium at an angle $\theta$ with respect to $B_2$ field, then the value of $\theta$ is